Hermaphrodite, also known as herm, refers to pornography, typically hentai, that features persons with the genitalia of both sexes. Macrophilia is a fascination with or a sexual fantasy involving giants, more commonly expressed as giantesses . Behind the Green Door was one of the first pornographic films to feature sex between a white actress with a black actor . Sexual orientation Pornography features an increasing variety of combinations of actors by their sexual orientation such as lesbian, gay, bisexual, and transsexuals in addition to traditional heterosexual roles. Foot fetishism has been defined as a pronounced sexual interest in the feet or footwear. Reality and voyeur gay twinks pornography, animated videos, and legally prohibited acts also influence the classification of pornography. The term BDSM hentai sex dates back to 1969; however, the origin of the term BDSM is unclear and is believed to have been formed either from joining the term B&D with S&M , or as a compound initialism from B&D, D&S , and S&M. When used nude milfs as an alternative to penile-vaginal penetration, the goal may be to preserve virginity or to prevent pregnancy. Works in this genre may be considered adult for any number of reasons. The current public acceptance of celebrities with sex tapes is speculated by Joe Levy, executive editor of Rolling Stone, to be due to the easy availability of pornography, as well as couples more commonly making their own tapes due to the prevalence of video cameras. The queening stool is also related to a smotherbox, which also allows the person under the seat to be locked in place, restrained by the neck as in a set of stocks. Today, religions vary in their views of masturbation; some view it as a spiritually detrimental practice, some see it as not spiritually detrimental, and others take a situational view. People may experience pleasure from anal sex by stimulation of the anal nerve endings, and orgasm may be achieved through anal penetration – by indirect stimulation of the prostate in men, indirect clitoral/G-spot stimulation in women, and associated sensory nerves .